/* ── private screening room ─────────────────────────────── */

:root {
  --ink: #0d0b08;          /* warm black */
  --ink-soft: #161310;
  --bone: #ece5d8;         /* warm off-white */
  --bone-dim: rgba(236, 229, 216, 0.45);
  --amber: #d99a3d;
  --hairline: rgba(236, 229, 216, 0.18);
  --serif: "Fraunces", georgia, serif;
  --mono: "Azeret Mono", monospace;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

/* the hidden attribute must beat any display rule below */
[hidden] { display: none !important; }

html, body {
  height: 100%;
  overflow: hidden;
  background: var(--ink);
  color: var(--bone);
  -webkit-font-smoothing: antialiased;
}

body {
  font-family: var(--mono);
  /* subtle radial vignette so media floats in darkness */
  background:
    radial-gradient(120% 90% at 50% 40%, var(--ink-soft) 0%, var(--ink) 70%);
}

/* film grain over everything, beneath nothing interactive */
#grain {
  position: fixed;
  inset: -50%;
  pointer-events: none;
  z-index: 50;
  opacity: 0.05;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='240' height='240'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2'/%3E%3C/filter%3E%3Crect width='240' height='240' filter='url(%23n)'/%3E%3C/svg%3E");
  animation: grain-shift 0.9s steps(3) infinite;
}
@keyframes grain-shift {
  0%   { transform: translate(0, 0); }
  33%  { transform: translate(-2%, 1%); }
  66%  { transform: translate(1%, -2%); }
}

/* ── stage ──────────────────────────────────────────────── */

#stage {
  position: fixed;
  inset: 0;
  opacity: 0;
  transition: opacity 0.7s ease;
}
#stage.lit { opacity: 1; }

.swiper { position: absolute; inset: 0; }

.swiper-slide {
  display: flex;
  align-items: center;
  justify-content: center;
}

.swiper-slide img,
.swiper-slide video {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
  user-select: none;
  -webkit-user-drag: none;
}

/* gentle settle as each outer slide becomes active; wide slides
   settle as one unit so the strip cropping stays exact */
.outer > .swiper-zoom-container img,
.outer > video,
.outer > .wide-swiper {
  opacity: 0.35;
  transform: scale(0.97);
  transition: opacity 0.45s ease, transform 0.45s ease;
}
.outer.swiper-slide-active > .swiper-zoom-container img,
.outer.swiper-slide-active > video,
.outer.swiper-slide-active > .wide-swiper {
  opacity: 1;
  transform: scale(1);
}

/* ── wide slides: a big image sliced into swipeable strips ─ */

.wide-swiper {
  width: 100%;
  height: 100%;
}
.strip {
  position: relative;
  width: var(--sw);
  height: var(--sh);
  margin: auto;
  overflow: hidden;
  box-shadow: 0 0 60px rgba(0, 0, 0, 0.55);
}
.strip img {
  position: absolute;
  top: 0;
  left: calc(var(--i) * var(--sw) * -1);
  height: 100% !important;
  width: auto;
  max-width: none;
}
.wide-swiper .swiper-pagination-bullet {
  width: 5px;
  height: 5px;
  background: var(--bone-dim);
  opacity: 0.6;
}
.wide-swiper .swiper-pagination-bullet-active {
  background: var(--amber);
  opacity: 1;
}

/* ── top chrome: story-style progress + title ───────────── */

#chrome-top {
  position: absolute;
  top: 0; left: 0; right: 0;
  z-index: 10;
  padding: calc(env(safe-area-inset-top) + 14px) 18px 0;
  background: linear-gradient(to bottom, rgba(13, 11, 8, 0.75), transparent);
  pointer-events: none;
}

#progress {
  display: flex;
  gap: 5px;
  height: 2px;
}
#progress i {
  flex: 1;
  background: var(--hairline);
  border-radius: 1px;
  overflow: hidden;
  position: relative;
}
#progress i::after {
  content: "";
  position: absolute;
  inset: 0;
  background: var(--bone);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.35s ease;
}
#progress i.lit::after { transform: scaleX(1); }

#title {
  margin-top: 16px;
  font-family: var(--serif);
  font-style: italic;
  font-weight: 350;
  font-size: clamp(1.15rem, 2.5vw, 1.5rem);
  letter-spacing: 0.01em;
  color: var(--bone);
  text-shadow: 0 1px 12px rgba(0, 0, 0, 0.6);
}

/* ── bottom chrome: caption + counter ───────────────────── */

#chrome-bottom {
  position: absolute;
  bottom: 0; left: 0; right: 0;
  z-index: 10;
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 16px;
  padding: 40px 18px calc(env(safe-area-inset-bottom) + 16px);
  background: linear-gradient(to top, rgba(13, 11, 8, 0.75), transparent);
  pointer-events: none;
}

#caption {
  font-size: 0.72rem;
  font-weight: 300;
  letter-spacing: 0.04em;
  color: var(--bone-dim);
  max-width: 70%;
  line-height: 1.5;
}

#counter {
  font-size: 0.68rem;
  letter-spacing: 0.18em;
  color: var(--bone-dim);
  white-space: nowrap;
}
#counter b {
  font-weight: 400;
  color: var(--amber);
}

/* ── desktop arrows: hidden until hover ─────────────────── */

.nav-arrow {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  z-index: 10;
  width: 52px;
  height: 52px;
  border: 1px solid var(--hairline);
  border-radius: 50%;
  background: rgba(13, 11, 8, 0.55);
  color: var(--bone);
  font-family: var(--serif);
  font-size: 1.6rem;
  line-height: 1;
  cursor: pointer;
  opacity: 0;
  transition: opacity 0.3s ease, border-color 0.2s ease;
  display: none;
}
#prev { left: 24px; }
#next { right: 24px; }

@media (hover: hover) and (pointer: fine) {
  .nav-arrow { display: block; }
  #stage:hover .nav-arrow:not(:disabled) { opacity: 1; }
  .nav-arrow:hover { border-color: var(--amber); color: var(--amber); }
}
.nav-arrow:disabled { opacity: 0 !important; cursor: default; }

/* vertical galleries: chevrons rotate to up/down, stacked at right edge */
body.vertical #prev,
body.vertical #next {
  left: auto;
  right: 24px;
}
body.vertical #prev { transform: translateY(-50%) translateY(-34px) rotate(90deg); }
body.vertical #next { transform: translateY(-50%) translateY(34px) rotate(90deg); }

/* ── empty / not-found state ────────────────────────────── */

#empty {
  position: fixed;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 18px;
}
.empty-mark {
  font-size: 2rem;
  color: var(--amber);
  animation: slow-spin 14s linear infinite;
}
@keyframes slow-spin { to { transform: rotate(360deg); } }
.empty-text {
  font-size: 0.72rem;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--bone-dim);
}

@media (prefers-reduced-motion: reduce) {
  #grain, .empty-mark { animation: none; }
}